Paul T. Keyser studied physics and classics at St. Andrew’s School, Duke University, and the University of Colorado at Boulder (where he obtained a Ph.D. in physics and another in classics). He taught at Edmonton, Cornell, and Tuscaloosa before becoming a software engineer at IBM and Google. He now works as a site-reliability engineer and publishes on ancient Greco-Roman science and technology. He has co-edited three books: Greek Science (2002); Encyclopedia of Ancient Natural Scientists (2008); and the Oxford Handbook of Science and Medicine in the Classical World (2018).